/*
 * Copyright (c) 2014-2022 Stream.io Inc. All rights reserved.
 *
 * Licensed under the Stream License;
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    https://github.com/GetStream/stream-chat-android/blob/main/LICENSE
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package io.getstream.chat.android.state.plugin.logic.channel.internal

import io.getstream.chat.android.client.api.models.QueryChannelRequest
import io.getstream.chat.android.state.plugin.state.channel.internal.ChannelMutableState

internal class SearchLogic(private val mutableState: ChannelMutableState) {

    private var isInsideSearch = false

    fun handleMessageBounds(request: QueryChannelRequest, noMoreMessages: Boolean) {
        when {
            !isInsideSearch && request.isFilteringAroundIdMessages() -> {
                updateSearchState(true)
            }

            isInsideSearch && request.isFilteringNewerMessages() && noMoreMessages -> {
                updateSearchState(false)
            }

            !request.isNotificationUpdate && !request.isFilteringMessages() && request.messagesLimit() != 0 -> {
                updateSearchState(false)
            }
        }
    }

    private fun updateSearchState(isInsideSearch: Boolean) {
        this.isInsideSearch = isInsideSearch
        mutableState.setInsideSearch(isInsideSearch)
    }
}
